Display Panel and Driving Method Thereof

1. A display panel, comprising: a plurality of digital code display units, wherein each of the digital code display units displays a digital code and comprises: a plurality of display segments, at least grouped into a first group and a second group, wherein a signal waveform of at least one of a plurality of common electrode signals for driving the first group is the same as a signal waveform of at least one of a plurality common electrode signals for driving the second group, wherein a plurality of driving signals is configured to drive the first group, and the driving signals are different, wherein one of the driving signals driving the first group drives all of the display segments in the first group to present a first color or gray-scale, and another one of the driving signals driving the first group drives all of the display segments in the first group to present a second color or gray-scale, wherein the first color or gray-scale is different from the second color or gray-scale.

2. The display panel as claimed in claim 1 , wherein the number of the display segments comprised in the first group is larger than the number of the display segments comprised in the second group, and the number of the common electrode signals for driving the first group is larger than the number of the common electrode signals for driving the second group.

3. The display panel as claimed in claim 2 , wherein the first group comprises a first display segment, a second display segment, and a third display segment of the display segments, and the common electrode signals for driving the first group comprise a first common electrode signal, a second common electrode signal, and a third common electrode signal, wherein the first, the second, and the third common electrode signals have different signal waveforms for driving the first, the second, and the third display segments respectively.

4. The display panel as claimed in claim 3 , wherein the first display segment and the third display segment extend in a first direction and are arranged in a second direction, and the digital code display units are arranged in the first direction, wherein the first direction serves as a reference direction, and the first direction is crossed to the second direction.

5. The display panel as claimed in claim 4 , wherein the second display segment extends in the second direction.

6. The display panel as claimed in claim 3 , wherein the second group comprises a fourth display segment and a fifth display segment of the display segments, and the common electrode signals for driving the second group are two common electrode signals selected from the first, the second, and the third common electrode signals for driving the fourth and the fifth display segments respectively.

7. The display panel as claimed in claim 6 , wherein the fourth display segment and the fifth display segment are arranged in a first direction and extend in a second direction, and the digital code display units are arranged in the first direction, and the digital code display unit is arranged in the first direction, wherein the first direction serves as a reference direction, and the first direction is crossed to the second direction.

8. The display panel as claimed in claim 1 , wherein the display segments comprise at least one display segment different from the first group and the second group of the display segments, wherein at least one common electrode signal is configured to drive the at least one display segment different from the first group and the second group of the display segments, and a signal waveform of the at least one common electrode signal is the same as a signal waveform of one of the common electrode signals for driving the first group.

9. The display panel as claimed in claim 1 , wherein the display segments comprise at least one display segment different from the first group and the second group of the display segments, wherein at least one common electrode signal is configured to drive the at least one display segment different from the first group and the second group of the display segments, and a signal waveform of the at least one common electrode signal is different from signal waveforms of the common electrode signals for driving the first group.

10. The display panel as claimed in claim 9 , wherein the display segments comprise a sixth display segment and a seventh display segment other than the first group and the second group, and the at least one common electrode signal for driving the display segments other than the first group and the second group of the display segments comprises a fourth common electrode signal for driving the sixth and the seventh display segments.

11. The display panel as claimed in claim 10 , wherein the sixth display segment extends in a first direction, and the seventh display segment extends in a second direction, wherein the first direction is crossed to the second direction.

12. The display panel as claimed in claim 1 , wherein the display segments comprised in the first group are coupled to a driving circuit through a first signal line, and the display segments comprised in the second group are coupled to the driving circuit through a second signal line.

13. The display panel as claimed in claim 12 , wherein the driving circuit transmits one of a plurality of first driving signals to the first group by using the first signal line to drive the first group, and the driving circuit transmits one of a plurality of second driving signals to the second group by using the second signal line to drive the second group, and the first signal line is different from the second signal line.

14. The display panel as claimed in claim 12 , wherein the display segments other than the first group and the second group of the display segments are respectively coupled to the driving circuit through a plurality of third signal lines, and the third signal lines are different from the first and the second signal lines.

15. The display panel as claimed in claim 14 , wherein the driving circuit transmits a plurality of third driving signals to the display segments other than the first and the second groups of the display segments by respectively using the third signal lines to drive the display segments other than the first and the second groups of the display segments.

16. The display panel as claimed in claim 1 , wherein a combination of the display segments comprised in the first group is driven by the common electrode signals to present at least four display states, and a combination of the display segments comprised in the second group is driven by the common electrode signals to present at least three display states.

17. The display panel as claimed in claim 16 , wherein the combination of the display segments comprised in the first group is driven by one of a plurality of first driving signals to present one of the four display states, and the combination of the display segments comprised in the second group is driven by one of a plurality of second driving signals to present one of the three display states.

18. A driving method of a display panel, wherein the display panel comprises at least one digital code display unit for displaying a digital code, and the at least one digital code display unit comprises a plurality of display segments, the driving method comprising: driving a first group of the display segments by using a plurality of common electrode signals, wherein a plurality of driving signals is configured to drive the first group, and the driving signals are different; and driving a second group of the display segments by using at least one of the common electrode signals, wherein one of the driving signals driving the first group drives all of the display segments in the first group to present a first color or gray-scale, and another one of the driving signals driving the first group drives all of the display segments in the first group to present a second color or gray-scale, wherein the first color or gray-scale is different from the second color.

19. The driving method as claimed in claim 18 , wherein the step of driving the first group of the display segments by using the common electrode signals comprises: driving the first group of the display segments by using one of a plurality of first driving signals together with the common electrode signals; and the step of driving the second group of the display segments by using the at least one of the common electrode signals comprises: driving the second group of the display segments by using one of a plurality of second driving signals together with the at least one of the common electrode signals.

20. The driving method as claimed in claim 18 , further comprising: driving at least one display segment other than the first group and second group of the display segments in the at least one digital code display unit by using a common electrode signal other than the common electrode signals for driving the first group and second group of the display segments.

21. The driving method as claimed in claim 20 , wherein the step of driving the at least one display segment other than the first group and second group of the display segments in the digital code display unit by using the common electrode signal other than the common electrode signals comprises: driving the display segments other than the first group and the second group by using a plurality of third driving signals together with the common electrode signal other than the common electrode signals for driving the first group and second group of the display segments.

22. The driving method as claimed in claim 18 , wherein the first group comprises a first display segment, a second display segment, and a third display segment of the display segments, and the step of driving the first group of the display segments by using the common electrode signals comprises: driving the first, the second and the third display segments by using a first common electrode signal, a second common electrode signal, and a third common electrode signal of the common electrode signals respectively, wherein the first, the second, and the third common electrode signals have different signal waveforms.

23. The driving method as claimed in claim 22 , wherein the second group comprises a fourth display segment, and a fifth display segment of the display segments, and step of driving the second group by using the at least one of the common electrode signals comprises: driving the fourth and the fifth display segments by using two common electrode signals chosen from the first, the second, and the third common electrode signals.

24. The driving method as claimed in claim 23 , wherein the display segments comprise a sixth display segment and a seventh display segment other than the first group and the second group, and the driving method further comprises: driving the sixth display segment and the seventh display segment by using a fourth common electrode signal other than the common electrode signals for driving the first group and second group of the display segments.

25. The driving method as claimed in claim 24 , wherein a signal waveform of the fourth common electrode signal is different from signal waveforms of the first, the second, and the third common electrode signals.

26. The driving method as claimed in claim 24 , wherein a signal waveform of the fourth common electrode signal is the same as one of signal waveforms of the first, the second, and the third common electrode signals.

27. The driving method as claimed in claim 18 , wherein a combination of the display segments comprised in the first group is driven by the common electrode signals to present at least four display states, and a combination of the display segments comprised in the second group is driven by the common electrode signals to present at least three display states.

28. The driving method as claimed in claim 27 , wherein the combination of the display segments comprised in the first group is driven by one of a plurality of first driving signals to present one of the four display states, and the combination of the display segments comprised in the second group is driven by one of a plurality of second driving signals to present one of the three display states.

29. The driving method as claimed in claim 18 , wherein the number of the display segments comprised in the first group is larger than the number of the display segments comprised in the second group, and the number of the common electrode signals for driving the first group is larger than the number of the common electrode signals for driving the second group.